Home / 20,612,611.63-28,456,447.58-15,892,698.45

Finding the Fourth Proportional to 20,612,611.63, 28,456,447.58 and 15,892,698.45

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Solution

The fourth proportional to 20,612,611.63, 28,456,447.58 and 15,892,698.45 is: 21,940,438.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612,611.63 : 28,456,447.58 = 15,892,698.45 : x
  2. Step 2: Convert to fraction form
    20,612,611.63/28,456,447.58 = 15,892,698.45/x
  3. Step 3: Cross multiply
    20,612,611.63x = 28,456,447.58 × 15,892,698.45
  4. Step 4: Simplify right side
    20,612,611.63x = 452,249,740,347,172.19
  5. Step 5: Solve for x
    x = 452,249,740,347,172.19/20,612,611.63
  6. Step 6: Final answer
    x = 21,940,438.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.